Side-seal closure



G. RAMSEY.

SIDE SEAL CLOSURE. I APPLICATION FILED M Y I5, 1917.

1,327,963; I Patented Jan. 13, 1920. I

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GEORGE RAMSEY, OF BROOKLYN, YORK, ASSIGN OR TO ANCHOR & CLOSURE CORPORATION, OF BROOKLYN, NEW YORK,- A CORPORATION OF NEW YORK.

SIDE-SEAL CLOSURE.

Specification of Letters Patent. Patented Jan. 13, 1920.

Application filed May 15, 1917. Serial No. 168,801.

To all whom it may concern:

Be it known that I, GEORGE RAMSEY, a citizen of the United States, and a resident of the city of Brooklyn, in the county of Kings, State of New York, have invented is adapted to be secured in position on the receptacle by merel cap overthe side wal s of the receptacle and the sealing cap is retained in position by frictional engagement of portions of the cap with the side wall of the container. A further and primary object of the present invention is to provide a. sealing cap and a sealed-package of. the character specified wherein the seal-effected is a hermetic seal secured and maintained by a cap of the friction type. w

A 'further and equally primary object of the present invention is to provide a friction cap adaptable to be sealed onsubstantially a straight walled container and where-- in the contact between the side wall of the container and the skirt of the cap comprises primarily a plurality of separated friction surfaces.

N A an further and impor tantobject arthe present invention is. the production of a friction seal cap adaptable for use in a vacuum sealing machine whereby a package sure.

may be sealed under a vacuumwhichis efiectively maintained by the operation -of.' when positioned over a suitable clo- Another object of the present invention is to provide a closure cap wherein the skirt of the cap is designed to expand circumferentially to provide friction engaging surfaces that are maintained under pressure against the side walls of the container to secure and retain the cap in position upon a suitable package.

Other and further objects of the present invention will in part beobvious and will in part be pointed out hereinafter in the specification following by reference to theaccom- 'the expansion of the skirt ofa cap when in forcing the sealing panying drawings forming a part of this application, and wherein like characters are used to designate like parts throughout the several figures of the drawings.

position on a contalner.

Fig. 5 is a sectional view taken on line B 'B Fig. 3.

Fig. 6 is a detail view taken on line (3-0 Fig. 7 is a detail view taken on line D D F ig. 4. v

Fig. 8 is a view illustrating the complete acka e con'i risin a -'ar with a ea in osition thereon.

Fig. 9 is a detail view illustrating one formof acap comprising this invention with the gasket material arranged adjacent the cover portion of the cap to comprise a top and side seal.

It is the intention of the presentinvention to provide a corrugated skirt on a metal cap' whereby the corrugations may be expanded or distended when-the .cap is forced over a substantially incompressible side wall. of a container, forexample, a glass ar, andwherein the tendency of the metal to con-,

tract produces a tight friction seal between i the skirt of the cap and the side wall of the container. This construction permlts one size of cap to be used on glass. wherein the variation from a fixed dimension is rela-v tively large so far as this type of closure is concerned. Undercertain condltions it may be desirable to provide a hermetic seal with a cap of thischaracter and the construction ofthe presentcap is 'such that it may be conveniently filled with a-suitable sealing material, such as chicle gum or other suit able semi-plastic material which may comprise a gasket or packing between the cap and the container to hermetically sealthe joint therebetween. For many purposes it.

is notvessential that the joint be sealed so that the present cap may be used without the packing or gasket material. The invention may take on several specific constructions, but preferably the corrguations are formed of curved grooves with the concave side of the groove on the outside of the skirt with the bead adapted to contactwith the outside side wall of the container. Also where ,the sealing material is used it may be disposed in various portions of the cap to form either a side or top seal, as will be hereinafter more fullyexplained;

0 a distended spring.

Referring now to the drawings, the cap comprlses a cover portion 1 to whlch is attached a dependent skirt 2. The depend:

ing skirt may be variously formed in such manner as to be capable of circumferential expansion, but preferably is provided with an annular inwardly curved bead traversed by a plurality of corrugations, 4, which thereby in cross-section somewhat resembles rugations also may be formed upon an arc, as indicated as at 5, Fig. 5. The .uncor-rugated portions of the cap material, above and below the inwardly curved annular head .form comparatively nonrexpansiblc restricting members, which act under tension to hold the corrugated portion stressed under compression against the side of the vessel when the cap is in' use. The inwardly g curved annular bead gives the skirt a de-. slrable transverse flexibility within the limitation imposed by the uncorrugated restricting portions, and the corrugations permit the necessary circumferential expansion of the annular head to accommodate the expected variations in contour of the vessel. The

lower margin of the skirt is left unbeaded to permit a desirable fiexiblity whereby the skirt may be accommodated to the contour of v 40 vessels which are out of round, while still eX- ercising the restricting function upon the expansible beaded portion of the skirt. Such caps may be used in a vacuum sealing machine, and as previously specified may form a hermetic seal with a suitable container by providing a semi-plastic gasket- -material which may fill the corrugat ons and portlons of the cap,,as at 6. Where the gasket material is disposed-as indicated in F1gs.'5, 6 and the construction forms substantially a si e seal. Where thg gasket materialis disposed, as at 7, in F 9, the seal is substantially a top seal, although, a certain portion the gasket material forms a side seal, as at 8. In this type where the package is sealed under a gasket the atmospheric pressure on the cover portion 1 maintains thegasket material under both downward and inward pressure, as at 7 and 8 respectively. 'In sealing. this type of package no particular or speclal type of machinery is necessary other than (lGVlCGS capable of causing relative movement of the container 9, which may comprise a glass jar or other suitable article, and the skirt of the closure If desired these cor-- cap. As above stated where the package is sealed under vacuum the well known type of vacuum machine capable of producing such relative movement may be used for sealin purposes.

ReaTizing that the present invention may be, embodied in structures other than the specific disclosure herewith it is desired that the specific construction illustrated and described should beunderstood as illustrative and not in the limiting sense.

- Having thus described my invention what I claim is 1. A closure for glass receptacles and the like comprising a top portion, a skirt depending from said top portion, a groove on the'exterior of said skirt to form a head on the interior of said skirt, and transverse corrugations extending across said groove and terminating short of the margin of the skirt and providing friction members on the interior of said skirt adapted to contact,

with and engage the side wall of a suitable receptacle to frictionally maintain said cap in position upon such receptacle.

2. A closure cap for glass walled receppackage comprising. a receptacle having a substantially incompressible straight side wall, in combination with a cap in position on said receptacle and sealing the same, said cap comprising a coverportion, a skirt de'-- pending from said cover portion, said skirt being provided with corrugations having arcuate crowns extending transversely of said sklrt, and means holding sald corrugations under stress to maintain the innermost portions of said corrugations 1n frictional engagement with the said side wall of said receptacle. v

4. A closure of the sort described comprising a cap of flexible sheet material hav-' ing a depending annular skirt portion, said skirt portion being formed with an annular inwardly pressed resilient bead, and ,the portion of the material in said bead being,

purpose described.

5. As anartlcle of manufacture, a closure comprismga cap of flexible sheetmaterial formed with a cover portion, a depending skirt portion, the said skirt portion beingprovided with an annular head of smaller circumference than the cover portion formed of a portion of the skirt material struck inwardly, and the said annular bead having formed with transverse corrugations for the transverse corrugations formed therein and projecting inwardly from the bead.

ing a substantially incompressible arcuate side Wall, a cap of, flexible material having a top portion extending across the mouth of the container, and a skirt portion encompassing the side wall, said skirt portion being provided withan annular bead formed, of a part of the material of. the skirt pressed inwardly, a portion of the cap adjacent the junction of the top and skirt forming an annular channel, gasket material disposed in said channel and compressed between the arcuate side wall of the container and the skirt of the cap to provide a side. seal, and the annular bead portion ofthe skirt being provided with transverse corrugations, thecrowns of which have frictional engagement with the sidewalls of the container.

7. A closure comprising a cap of flexible sheet material having a top portion and an annular depending skirt portion, the skirt portion being formed withan annular inwardly'struck comprising a p'ortion'of 1,s27,acs

at; material of'the skirt, the portions 5f the ing continuous circumferential restricting members, and the bead portion being formed with 'transversecorrugations for the pur-' pose described,

8. Aclosure comprising a cap of flexible I i skirt material not included in the bead form. 6. A package including a container hav-- sheet-material having atop portion and an annular, dependingskirt portion, said skirt Y portion being 'formed' with an inwardly.

pressed annular bead whereby the said skirt isrendered extensible in depth and the material of the annular bead being formed with transverse corrugations whereby said bead portion is renderedexpansible circurn ferentially. g

9. A closure of theclass described comprising a cap including a cover portion and a depending resilient annular skirt portion, said skirt portion being'formed withan ine wardly pressed resilient bead extending in the circumferential direction of the' skirt and with corrugations extending across the beadin the transverse direction of'the skirt.

. GEORGE RAMSEY.'. 

